- Hugh Huntley - Perkins
- Monte Vandergrift - Al
- Frank Mayo - Train Engineer
- Jim Farley - Skipper
- Eddie Acuff - Mac
- Reed Howes - Signalman
- Ed Wolff - The Robot
- Hooper Atchley - Experimental Lab Tech
- Roy Barcroft - AMI Agent Parker
- Robert Blair - Smith
- Al Bridge - White Rose Sailor
- Don Brodie - Thug
- Lane Chandler - Henchman with Rankin
- Edmund Cobb - Army Sergeant
- Lee J. Cobb - Road Crew Foreman (archive footage)
- Eddie Dunn - Policeman
- Jerry Frank - Henchman with Rankin
- Karl Hackett - Brown
- Charles King - Cop
- George Magrill - Thug-Pilot / Schooner Crewman
- Monte Montague - Airplane Mechanic
- Pat O'Malley - AMI Chief
- David Sharpe - Schooner Sailor
- Tom Steele - Train Conductor / Radio Truck Driver
- Forrest Taylor - Black
- Harry Wilson - Schooner Crewman
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Nils Gaup
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Nils Gaup
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John M. Jacobsen
Capítulo disponible en las siguientes plataformas: